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Audio Features
> HD voice: HD handset, HD speaker
> Codecs: G.722, G.711(A/μ), G.723.1, G.729AB, G.726, iLBC
> DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
> Full-duplex hands-free speakerphone with AEC
> VAD, CNG, AEC, PLC, AJB, AGC

Phone Features
> 2 VoIP accounts
> Call hold, mute, DND
> One-touch speed dial, hotline
> Call forward, call waiting, call transfer
> SMS
> Redial, call return, auto answer
> Local 3-way conferencing
> Direct IP call without SIP proxy
> Ring tone selection/import/delete
> Set date time manually or automatically
> Dial plan

Directory
> Loal phonebook up to 500 entries
> Black list
> XML/LDAP remote phonebook
> Intelligent search method
> Phonebook search/import/export
> Call history: dialed/received/missed/forwarded

IP-PBX Features
> Anonymous call, anonymous call rejection
> Hot-desking, emergency call
> Message Waiting Indicator (MWI)
> Voice mail
> Call park, call pickup
> Intercom, paging
> Music on hold
> Call completion
> Call recording

 Display and Indicator
> 128x64-pixel graphical LCD with backlight
> LED for call and message waiting indication
> Intuitive user interface with soft keys
> National language selection
> Caller ID with name, number

Other Physical Features
> External universal AC adapter (optional): AC 100~240V input and DC 5V/1A output
> Power consumption (PSU): 1.3-2.1W
> Power consumption (PoE): 1.8-3.1W
> Dimension: 210 x 170 x 45mm
> Operating humidity: 10~95%
> Operating temperature: -10~50°C

Feature keys
> 5 features keys:headset, phonebook, mute, speaker, redial
> 3 “soft” keys
> 5 navigation keys
> Volume control keys
> 2xRJ45 10/100M Ethernet ports
> Power over Ethernet (IEEE 802.3af), class 2
> 1xRJ9 (4P4C) handset port

Network and Security
> SIP v1 (RFC2543), v2 (RFC3261)
> Call server redundancy supported
> NAT transverse: STUN mode
> Proxy mode and peer-to-peer SIP link mode
> IP assignment: static/DHCP/PPPoE
> HTTP/HTTPS web server
> Time and date synchronization using SNTP
> UDP/TCP/DNS-SRV(RFC 3263)
> QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
> SRTP for voice
> Transport Layer Security (TLS)
> HTTPS certificate manager
> AES encryption for configuration file
> Digest authentication using MD5/MD5-sess

Management
> Configuration: browser/phone/auto-provision
> Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
> Phone lock for personal privacy protection
> Reset to factory, reboot
> Package tracing export, system log

Package Features
> Qty/CTN: 10 PCS
> N.W/CTN: 9.3 KG
> G.W/CTN: 10.3 KG
> Giftbox size: 230X290X55 mm
> Carton Meas: 480X295X310 mm